The balanced chemical equation for the combustion of hexane (C6H14) with oxygen is as follows:
6 C6H14 + 19 O2 -> 12 CO2 + 14 H2O
So the answer is 6, 19, 12, 14. The coefficients in the balanced equation represent the stoichiometric ratio of the reactants and products, which must be whole numbers to satisfy the law of conservation of mass.